Laboratory and Field Evaluation of Warm Mix Asphalt ...Dr. Walaa S. Mogawer, PE - Principal Investigator Alexander J. Austerman, EIT - Research Engineer UMTC 09-01 9. Performing Organization

University of Massachusetts Transportation Center

Laboratory and Field Evaluation of Warm Mix Asphalt Technology to Determine its Applicability

for Massachusetts

Deval Patrick Timothy P. Murray Bernard Cohen Luisa Paiewonsky Governor Lieutenant Governor Secretary Commissioner

February 2008 SPRII 03.07.10

Massachusetts Transportation Research Program

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Technical Report Document Page

1. Report No. SPRII 03.07.10

2. Government Accession No. N/A

3. Recipients’ Catalog No. N/A

4. Title and Subtitle LABORATORY AND FIELD EVALUATION OF WARM MIX ASPHALT TECHNOLOGY TO DETERMINE ITS APPLICABILITY FOR MASSACHUSETTS

5. Report Date February 2008

6. Performing Organization Code N/A

7. Author(s) 8. Performing Organization Report No. Dr. Walaa S. Mogawer, PE - Principal Investigator Alexander J. Austerman, EIT - Research Engineer

UMTC 09-01

9. Performing Organization Name and Address 10 Work Unit No. (TRAIS) N/A

11. Contract or Grant No. ISA#4MS9793 Task 10

Department of Civil and Environmental Engineering University of Massachusetts Dartmouth 285 Old Westport Road North Dartmouth, MA 02747

13. Type of Report and Period Covered Final Report September 2005 - February 2008 14. Sponsoring Agency Code

12. Sponsoring Agency Name and Address Executive Office of Transportation and Public Works Office of Transportation Planning 10 Park Plaza Suite 4150 Boston, MA 02116

N/A

15 Supplementary Notes N/A 16. Abstract In an effort to achieve consistent field densities with its Gap Graded Stone Matrix Asphalt hot mix asphalt mix, the Massachusetts Highway Department choose to evaluate the organic additive Warm Mix Asphalt (WMA) technology Sasobit® in the laboratory and in a field trial as a compaction aid. A candidate field trial project on a southbound section of Interstate 95 (I-95) in Danvers, Massachusetts, was selected for the WMA trial. The same Gap Graded Stone Matrix Asphalt hot mix asphalt mix with and without the WMA technology additive was produced and placed along or on the roadside on the same production day. The experimental plan for this research project consisted of: documentation of construction procedures in the field, random sampling of materials, HMA specimen fabrication with the Superpave Gyratory compactor and Marshall compactor, material property testing (binder, aggregates and plant produced mix), and laboratory performance testing of the plant produced mix in terms of dynamic modulus, rutting, and moisture susceptibility. Also included in the study was an investigation into the effect on the specimen volumetric properties of re-heating the plant-produced mix. Overall, based on this research project, the addition of WMA technology into the Gap Graded Stone Matrix Asphalt mix yielded a mix with similar volumetric and performance characteristics to the control mix (without WMA technology) but with the added benefits of increased compaction at lower temperatures and lower visible emissions. 17. Key Words Warm Mix Asphalt, WMA, GGSMA, Sasobit®

18. Distribution Statement No restrictions. This document is available to the public through the sponsoring agency.

19. Security Classif. (of this report) Unclassified

20. Security Classif. (of this page) Unclassified

21. No. of Pages 8

22. Price N/A 9

Form DOT F 1700.7 (8-72)